Mortising machine



Dec. 22, 1931. H. T. PARKER MORTISING MACHINE Filed NOV. 19, 1928 2 Sheets-Sheet Dec. 22, 1931. H. T. PARKER 1,837,831

MORTISING MACHINE Filed Nov. 19, 192s 2 sheets-sheet 2 fifii-. 74 f .3 M (/i/) r( 0 Z iii Patented Dec. 22, 1931 UNITED STATES gPATENT oFFicE,

HARRY T. PARKER, OF OAKLAND, CALIFORNIA, ASSIGNOR TO THE STANLEY WORKS MORTISING MACHINE Application ledNovemb'er 19, 1928. Serial No. 320,513.

My invention relates to a device `for cutting mortises, such as are used in window frames for the reception of sash pulleys or the like.

An object of the invention is to provide a mortising machine which cuts a slot and machines acountersunk surface on a window sash in a single operation, said countersunk surface to receive the faceplate of the sash pulley and to extend beyond the ends of the slot, thereby to provide a large, undiminished bearing surface for the faceplate of the sash pulley and a firm support for the screws in said faceplate.

Another object of the invention is to provide a device of this character which will simultaneously out a plurality of mortises in a single operation.

resorted to without departing from the spirit, or without sacrificing any of theadvantages' of, the invention.

In the drawings: f v

f Figure 1 is a front` elevation of the device of my invention;

Figure 2 is a sectional view of my vdevice taken on'the line 2-2 of Figure 1;

Figure 3 is a view of my device partially broken away, taken on the line 3 3 in'Figure 2, and showing the means for operating the material-holding device of my invention;

Figure 4 is an enlarged sectional view taken on the line 4-4 in Figure l, showing the construction of the mortise-cutting device; and f Figure 5 is a perspective view of a piece of material showing a countersunk mortise cut by my device.

In carrying out my invention, Iprovide a frame member l having spaced upright supporting "members 2 and`3 extending therefrom. Parallel rods 4 and 5 extend transversely between the supporting members 2 and 3, and' are secured to said supporting members.

Slidably mounted on the rods 4 and 5 is a tool support having mortise-cutting member or carriage 6, said membercomprising oppo-' sitely disposed supporting members 7 and 8. Said supporting'members are adapted to be slidably positioned on the rods 4 and 5, as shown in Figures 1 and 2. The supporting members 7 and 8 are provided with down wardly extending lugs 9 and 10 having bores therein to receive the rods 4 and 5. Y The supporting member 7 and 8 are held in a suitably spaced relation by parallelly disposed cross members 9 and 10. The cross members' 9 and 10 are removably securedy to the inside faces of the supporting members 7 and 8, in spaced relation to each other. Said cross members are secured to the supporting members in any suitable manner such as by! bolts 11. Cutter bearing' members 12 are removably secured to the cross members 9 and 10 by bolts 13,said cutter'bearing members being positioned in alignment with each other Y and held spaced by the cross members 9 and 10. It will be noted that the cross member 9 is Vadapted to be vertically adjusted with respect 'to the corresponding cross member 10 by means of slots 14 disposed in the supporting members 7 and 8. Y

A connecting rod l5 is pivotally secured by abolt 16 to across member 17 extending transversely between the lugs 9 of the supporting members Y7 and `8. The bolt 16 is centrally located between said supporting members and passing through a slot in the rod 15. The connecting rod l5 is also pivoted at 18 to'a bracket 19 fixed to the frame 1. Said second pivot is positioned below the pivot 16 land in vertical alignment therewith. The other end of'said connectingk rod is adapted to fit in a T-shaped bearing member 20 eccentrically secured to a beltpulley 21. Said bearing member is rotatable. and is adjustably secured in a slot 22 in said belt pulley by means of a bolt 23. It will now be seen that rotation of the belt pulley 21 will cause the connecting rod 15 to oscillate around the pivot 19 thereby causing a reciprocating motion of the mortise-cutting member 6.

A cutting tool shaft 24 is rotatably supported in the bearing 12, and a pulley 25 is attached, to thefen'd of the shaft 24 adjacent 45 to the side of the frame on which the pulley 21 is supported. Pulley 21 transmits the power to pulley 25 .by .anyconvent-ional means such as a belt. A cutting or slotting tool 26 is screwed into the shaft 24-atfthe-opposite end thereof. The cutting tool 26comprises two parallel blades'27 extending from I a-shank '28. Said blades. are sharpened on the outside e'dgesandaround the point there-- .of for/the purposefto be hereinafter .f `deascribed. A1gear129 isfiXedly-secured to the '3120' central portieriV of; the shaft 24;-and meshes VWit-h,gearsf30,.saidgears 30 to be in turn fixedly secured to the shafts 31 disposed-on the yopposite sides of theshaft 24-and'rotatably Isupportedin Vthe bearing 12. Thefcounter .boring tools 32.are screwedinto the ends of `:the shafts 31. .adj acent, to and onV the opposite sidesof the cutting tool 26. .Each of the counter boring tools 32 lcomprises two Ypar- Yallel blades 33, saidf'blades to be much` shorter :.130

than the'b1ades27, .as is 'clearly shownin :Figure 4, and a.- shank 34-to.support the .blades33andfto ,be screwedjingthe shaftyl. vItisevident that `when the pulley=25 isro- ;.tated, the rotation ,is simultaneously Y trans- ;mittedfto'all three cutting tools. 1

.A platform V35.is attachedtothefrods 36.

said l.rods being .slidablysupported in said -upright .supporting members 2;;aud 3. The `.ends of-the rods 36 .are tied toaether'by Aimeans of a cross bar37. Aahand-wheel screw member, 38 is iixedlylsecuredto the crossv tieL *.137 vand extends therethrough, said screw supported onfthe carriage 42. \Clamps yv V member to be threaded ina Ybracket 39 fiXedly ,aredisposed at'the opposite ends of-:the carriage 42 and spaced therefrom; so.as= to allow .the .pulley ystyle 44 to be slipped between-the upright member v43 andthe clamps 45. The 1 pulley style is thengripped bythe ,pressure A,ofthefclamps 45 tob e applied by f means of shafts A6,. operated V by the. eccentric -handle 47. l `;The eccentric handle-47 is pivotally; se-

cured to a cross shaft 48, said cross shaft 48 to be attached tothe ends of the shafts 46. The eccentric portion of handle 47 bears against the metal plate 49. The turning of the handle presses the eccentric against the carriage and reciprocates the clamping shafts46therein so as to actuate. the clamps` The invention operates as follows: The pulley style 44 is secured to the work sup- ;port f .or. carriage.- 35.2as heretofore described.

The carriage 35 is advanced towards the mor- :ti'si-ngtool 6 by the turning of the handwheel38. The cutting tools are rotated by the pulley 2l and pulley 25 and are reciproeatedby meansof. the connecting rod 15. The `pulleyfstyle 44 is slowly E pressed first against theslotting. tool26, said .tool cutting a slot 49 thru the pulley style 44 as `shown in Figure. -.Nearto the end of-,theslotting operation Vby the tool 26, the countersinkng tools 33, reachthepulley style 44. Vhen` the Ycarriage 35 is further-advanced, theslotting tool26 cuts. thru the stylewhile the counterboring tool fcuts. .a countersunk surface. 50

as shown in Figure 5. vThe countersunksurface extends sufficiently .far beyond. t-he -ends of. the, slotr to provide a ,large bearing sur- "face for the pulley faceplate andA the'fastenscrews 1 therein. .It .is. evident Y that by :changing the spacing r the; cutting tools7 the .radius fof the. counter-sunk shoulder. 50 may be increased so as to provide more clearance loutside oftheends ofthe sloty 49.

The :above mortising'is accomplished. by a single. operation, ...and .in single 4machine readily operated by one-.operator lwhofirst .clamps :the pulley style .44% ,on i the carriage v35. '.Thenby simply turning theehandwheel 38, both. the ,slotting and` countersinking of .thepulleystyle iscompleted. IV The cutting tools are so designedasf-to` allow. the-machining of. a large Ecauntersunk `shoulder simultaneously .with the cutting. of the slot :thru .,the, lpulley style.

H avingthus described my invention,.what

I :nowiclaim-rfand. desire tosecure byLetters ',Patent, is

1. "In a mortising machine,;a tool support, a work support, a rotatable.'slottingr toolV carriedbysaid tool support. for forming an elongated `slot, a rotatable counterboring tool 4to eachsideof said slotting toolfor form- Ying a counters'inlrfwhichgextendsconsiderable `distances.beyound theends of the, slot, the f axeso'f said. tools being parallel ancbpositiouedin asingle plane,1said cutting tooland caunterboringtools having :side .and end cutting edges .,andsaid slottingtoolbeing of f lesser. .diameterthan .and pQj.eCtn-g beyond said .-counterbor'ing tools.v means for reciproeating one of said supports in the direction in which; said tools; arespaced ,apart whereby said; tools will; cut laterally .fas i they are; fed

into the work, and means for feeding one support towards the other, said slot and marginal countersink being Jformed in the single operation of relatively feeding the tools into the Work.

2. In a mortising machine, a reciprocating tool support, a slotting tool journalled therein for forming an elongated slot, a rotary counterboring tool to each side of said slotting tool for forming a countersink extending considerable distances beyond the ends of the slot, all of said tools being routing tools having side cutting edges, said slotting tool extending beyond said counterboring tools, said tools having their axes lying in the plane in which the tools are reciprocated and being at right angles to the line of reciprocatio-n, said tools being arranged for cutting the slot and countersink in the single operation of feeding the tools into the Work Without interruption.

n testimony whereof I aiX my signature.

Y HARRY T. PARKER. 

